3D Metrology Using One Camera with Rotating Anamorphic Lenses

Area of Science:

• Optics and Photonics
• Computer Vision
• Metrology

Background:

• Traditional 3D metrology often requires multiple cameras or complex setups.
• Anamorphic imaging offers unique properties for optical measurements.
• Developing compact and efficient 3D sensing solutions is crucial for various applications.

Purpose of the Study:

• To introduce a novel 3D metrology method utilizing a single camera with rotating anamorphic lenses.
• To establish anamorphic lens imaging and distortion models for accurate 3D reconstruction.
• To demonstrate the feasibility and evaluate the accuracy of the proposed method.

Main Methods:

• A novel 3D metrology approach based on double optical centers of anamorphic imaging.
• Rotation of an anamorphic lens by -90° around its optical axis.
• Reconstruction of 3D data from two anamorphic images captured before and after lens rotation.
• Proposal of an anamorphic lens imaging model and a polynomial anamorphic distortion model.

Main Results:

• Successful reconstruction of 3D data using the proposed single-camera system.
• Experimental validation of the 3D metrology method and assessment of its measurement accuracy.
• Demonstration of simplified point matching compared to stereo vision.

Conclusions:

• The proposed 3D metrology method offers a simpler alternative to stereo vision.
• The technique is suitable for developing compact sensors for rapid 3D measurements.
• Potential applications include automotive navigation systems and other real-time 3D sensing tasks.